<template>
	<div>
		<div class="search">
			<input v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音"/>
		</div>
		<div class="search-content" ref="search" v-show="keyword">
			<ul>
				<li class="search-item border-bottom" v-for="item of list"
					:key="item.id"
					@click="handleCityClick(item.name)"
				>
					{{item.name}}
				</li>
				<li class="search-item border-bottom" 
					v-show="hasNoData"
					>
					没有找到匹配数据
				</li>
			</ul>
		</div>
	</div>
</template>

<script>
	import Bscroll from "better-scroll"
	import {mapMutations} from "vuex"
	export default {
		name: 'CitySearch',
		props:{
			cities:Object
		},
		data(){
			return {
				keyword:'',
				list:[],
				timer:null
			}
		},
		computed:{
			hasNoData(){
				return !this.list.length
			}
		},
		watch:{
			keyword(){
				if(this.timer){
					clearTimeout(this.timer)
				}
				if(!this.keyword){
					this.list=[]
					return
				}
				this.timer=setTimeout(()=>{
					const result=[]
					for(let i in this.cities){
						this.cities[i].forEach((value)=>{
							if(value.spell.indexOf(this.keyword)>-1||
								value.name.indexOf(this.keyword)>-1){
								result.push(value)
							}
						})
					}
					this.list=result
				},100)
			}
		},
		mounted(){
			this.scroll=new Bscroll(this.$refs.search)
		},
		methods:{
			handleCityClick(city){
				// this.$store.dispatch('changeCity',city)
				// this.$store.commit('changeCity',city)
				this.changeCity(city)
				this.$router.push('/')
			},
			...mapMutations(['changeCity']) //vuex提供的方法，this.$store.commit->...mapMutations(['changeCity'])
		}
	}
</script>

<style lang="stylus" scoped>
	@import '~@styles/varibles.styl'
	.search
		height :.72rem
		padding :0 .1rem
		background :$bgColor
		.search-input
			box-sizing :border-box
			width :100% 
			height :.62rem
			padding :0 .1rem
			line-height :.62rem
			text-align :center
			border-radius :.06rem
			color :#666
	.search-content
		z-index :1
		overflow :hidden
		position :absolute
		top :1.58rem
		left :0
		right :0
		bottom :0
		background :#eee
		.search-item
			line-height .62rem
			padding-left :.2rem
			color :#666
			background :#fff
</style>
